Simplify App usage by making LoopInterface argument optional

README.md

@@ -21,8 +21,7 @@ empty project directory:
 
 require __DIR__ . '/../vendor/autoload.php';
 
-$loop = React\EventLoop\Factory::create();
-$app = new FrameworkX\App($loop);
+$app = new FrameworkX\App();
 
 $app->get('/', function () {
     return new React\Http\Message\Response(
@@ -41,7 +40,6 @@ $app->get('/users/{name}', function (Psr\Http\Message\ServerRequestInterface $re
 });
 
 $app->run();
-$loop->run();
 ```
 
 Next, we need to install X and its dependencies to actually run this project.

composer.json

@@ -13,6 +13,7 @@
     "require": {
         "php": ">=7.1",
         "nikic/fast-route": "^1.3",
+        "react/event-loop": "dev-master#1a709e2 as 1.2.0",
         "react/http": "^1.1",
         "react/promise": "^2.7"
     },

docs/api/app.md

@@ -3,42 +3,19 @@
 The `App` class is your main entrypoint to any application that builds on top of X.
 It provides a simple API for routing HTTP requests as commonly used in RESTful applications.
 
-Internally, the `App` object builds on top of [ReactPHP](https://reactphp.org/)
-to do its magic, hence you have to create it like this:
-
 ```php
 # app.php
 <?php
 
 require __DIR__ . '/vendor/autoload.php';
 
-$loop = React\EventLoop\Factory::create();
-$app = new FrameworkX\App($loop);
+$app = new FrameworkX\App();
 
 // Register routes here, see routing…
 
 $app->run();
-$loop->run();
 ```
 
-> ℹ️ **Heads up!**
->
-> Major improvements upcoming! We're actively contributing to our underlying
-> libraries to make sure this can look like this in the near future:
->
-> ```php
-> # app.php
-> <?php
->
-> require __DIR__ . '/vendor/autoload.php';
->
-> $app = new FrameworkX\App();
->
-> // Register routes here, see routing…
->
-> $app->run();
-> ```
-
 ## Routing
 
 The `App` class offers a number of API methods that allow you to route incoming

docs/api/middleware.md

@@ -257,13 +257,11 @@ a global middleware handler for all registered routes:
 use Acme\Todo\AdminMiddleware;
 use Acme\Todo\UserController;
 
-$loop = React\EventLoop\Factory::create();
-$app = new FrameworkX\App($loop, new AdminMiddleware());
+$app = new FrameworkX\App(new AdminMiddleware());
 
 $app->get('/user', new UserController());
 
 $app->run();
-$loop->run();
 ```
 
 You can also combine global middleware handlers (think logging) with additional

docs/best-practices/controllers.md

@@ -13,8 +13,7 @@ To get started, let's take a look at the following simple closure definitions:
 
 require __DIR__ . '/vendor/autoload.php';
 
-$loop = React\EventLoop\Factory::create();
-$app = new FrameworkX\App($loop);
+$app = new FrameworkX\App();
 
 $app->get('/', function () {
     return new React\Http\Message\Response(
@@ -33,7 +32,6 @@ $app->get('/users/{name}', function (Psr\Http\Message\ServerRequestInterface $re
 });
 
 $app->run();
-$loop->run();
 ```
 
 While easy to get started, it's also easy to see how this will get out of hand for more complex
@@ -49,14 +47,12 @@ definition into three even simpler files:
 
 require __DIR__ . '/vendor/autoload.php';
 
-$loop = React\EventLoop\Factory::create();
-$app = new FrameworkX\App($loop);
+$app = new FrameworkX\App();
 
 $app->get('/', new Acme\Todo\HelloController());
 $app->get('/users/{name}', new Acme\Todo\UserController());
 
 $app->run();
-$loop->run();
 ```
 
 ```php

docs/getting-started/quickstart.md

@@ -22,8 +22,7 @@ You can use this example to get started by creating a new `app.php` file in your
 
 require __DIR__ . '/vendor/autoload.php';
 
-$loop = React\EventLoop\Factory::create();
-$app = new FrameworkX\App($loop);
+$app = new FrameworkX\App();
 
 $app->get('/', function () {
     return new React\Http\Message\Response(
@@ -42,7 +41,6 @@ $app->get('/users/{name}', function (Psr\Http\Message\ServerRequestInterface $re
 });
 
 $app->run();
-$loop->run();
 ```
 
 On a code level, this is everything you need to get started.

examples/index.php

@@ -1,13 +1,11 @@
 <?php
 
 use Psr\Http\Message\ServerRequestInterface;
-use React\EventLoop\Factory;
 use React\Stream\ThroughStream;
 
 require __DIR__ . '/../vendor/autoload.php';
 
-$loop = Factory::create();
-$app = new FrameworkX\App($loop);
+$app = new FrameworkX\App();
 
 $app->get('/', function () {
     return new React\Http\Message\Response(
@@ -73,9 +71,10 @@
     );
 });
 
-$app->get('/stream', function (ServerRequestInterface $request) use ($loop) {
+$app->get('/stream', function (ServerRequestInterface $request) {
     $stream = new ThroughStream();
 
+    $loop = React\EventLoop\Loop::get();
     $timer = $loop->addPeriodicTimer(0.5, function () use ($stream) {
         $stream->write(microtime(true) . ' hi!' . PHP_EOL);
     });
@@ -137,4 +136,3 @@
 });
 
 $app->run();
-$loop->run();

src/App.php

@@ -8,6 +8,7 @@
 use FastRoute\RouteParser\Std as RouteParser;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
+use React\EventLoop\Loop;
 use React\EventLoop\LoopInterface;
 use React\Http\Server as HttpServer;
 use React\Http\Message\Response;
@@ -23,8 +24,11 @@ class App
     private $router;
     private $routeDispatcher;
 
-    public function __construct(LoopInterface $loop)
+    public function __construct(LoopInterface $loop = null)
     {
+        if ($loop === null) {
+            $loop = Loop::get();
+        }
         $this->loop = $loop;
         $this->router = new RouteCollector(new RouteParser(), new RouteGenerator());
     }
@@ -153,6 +157,8 @@ public function run()
         } else {
             $this->runOnce();
         }
+
+        $this->loop->run();
     }
 
     private function runLoop()

tests/AppMiddlewareTest.php

@@ -8,7 +8,6 @@
 use PHPUnit\Framework\TestCase;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
-use React\EventLoop\LoopInterface;
 use React\Http\Message\ServerRequest;
 use React\Http\Message\Response;
 use React\Promise\PromiseInterface;
@@ -18,8 +17,7 @@ class AppMiddlewareTest extends TestCase
 {
     public function testGetMethodWithMiddlewareAddsGetRouteOnRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function () {};
         $controller = function () { };
@@ -36,8 +34,7 @@ public function testGetMethodWithMiddlewareAddsGetRouteOnRouter()
 
     public function testHeadMethodWithMiddlewareAddsHeadRouteOnRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function () {};
         $controller = function () { };
@@ -54,8 +51,7 @@ public function testHeadMethodWithMiddlewareAddsHeadRouteOnRouter()
 
     public function testPostMethodWithMiddlewareAddsPostRouteOnRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function () {};
         $controller = function () { };
@@ -72,8 +68,7 @@ public function testPostMethodWithMiddlewareAddsPostRouteOnRouter()
 
     public function testPutMethodWithMiddlewareAddsPutRouteOnRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function () {};
         $controller = function () { };
@@ -90,8 +85,7 @@ public function testPutMethodWithMiddlewareAddsPutRouteOnRouter()
 
     public function testPatchMethodWithMiddlewareAddsPatchRouteOnRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function () {};
         $controller = function () { };
@@ -108,8 +102,7 @@ public function testPatchMethodWithMiddlewareAddsPatchRouteOnRouter()
 
     public function testDeleteMethodWithMiddlewareAddsDeleteRouteOnRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function () {};
         $controller = function () { };
@@ -126,8 +119,7 @@ public function testDeleteMethodWithMiddlewareAddsDeleteRouteOnRouter()
 
     public function testOptionsMethodWithMiddlewareAddsOptionsRouteOnRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function () {};
         $controller = function () { };
@@ -144,8 +136,7 @@ public function testOptionsMethodWithMiddlewareAddsOptionsRouteOnRouter()
 
     public function testAnyMethodWithMiddlewareAddsAllHttpMethodsOnRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function () {};
         $controller = function () { };
@@ -162,8 +153,7 @@ public function testAnyMethodWithMiddlewareAddsAllHttpMethodsOnRouter()
 
     public function testMapMethodWithMiddlewareAddsGivenMethodsOnRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function () {};
         $controller = function () { };
@@ -180,9 +170,7 @@ public function testMapMethodWithMiddlewareAddsGivenMethodsOnRouter()
 
     public function testMiddlewareCallsNextReturnsResponseFromRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function (ServerRequestInterface $request, callable $next) {
             return $next($request);
@@ -216,9 +204,7 @@ public function testMiddlewareCallsNextReturnsResponseFromRouter()
 
     public function testMiddlewareCallsNextWithModifiedRequestReturnsResponseFromRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function (ServerRequestInterface $request, callable $next) {
             return $next($request->withAttribute('name', 'Alice'));
@@ -252,9 +238,7 @@ public function testMiddlewareCallsNextWithModifiedRequestReturnsResponseFromRou
 
     public function testMiddlewareCallsNextReturnsResponseModifiedInMiddlewareFromRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function (ServerRequestInterface $request, callable $next) {
             $response = $next($request);
@@ -289,9 +273,7 @@ public function testMiddlewareCallsNextReturnsResponseModifiedInMiddlewareFromRo
 
     public function testMiddlewareCallsNextReturnsDeferredResponseModifiedInMiddlewareFromRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function (ServerRequestInterface $request, callable $next) {
             $promise = $next($request);
@@ -336,9 +318,7 @@ public function testMiddlewareCallsNextReturnsDeferredResponseModifiedInMiddlewa
 
     public function testMiddlewareCallsNextReturnsCoroutineResponseModifiedInMiddlewareFromRouter()
     {
-        $loop = $this->createMock(LoopInterface::class);
-
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function (ServerRequestInterface $request, callable $next) {
             $generator = $next($request);
@@ -385,9 +365,7 @@ public function testMiddlewareCallsNextReturnsCoroutineResponseModifiedInMiddlew
 
     public function testMiddlewareCallsNextWhichThrowsExceptionReturnsInternalServerErrorResponse()
     {
-        $loop = $this->createMock(LoopInterface::class);
-
-        $app = new App($loop);
+        $app = new App();
 
         $middleware = function (ServerRequestInterface $request, callable $next) {
             return $next($request);
@@ -416,9 +394,7 @@ public function testMiddlewareCallsNextWhichThrowsExceptionReturnsInternalServer
 
     public function testMiddlewareWhichThrowsExceptionReturnsInternalServerErrorResponse()
     {
-        $loop = $this->createMock(LoopInterface::class);
-
-        $app = new App($loop);
+        $app = new App();
 
         $line = __LINE__ + 2;
         $middleware = function (ServerRequestInterface $request, callable $next) {